Seasonal and diet comparisons of the diets of four dominant fish species within the main channel and flood-zone of a small intermittently open estuary in south-eastern Australia

The diets of four highly-abundant, dominant fish species within the Surrey River, a small intermittently open estuary in south-east Australia, were examined from specimens collected between July 2004 and June 2005. These four, similar-sized species (Atherinosoma microstoma, Galaxias maculatus, Philypnodon grandiceps and Pseudogobius olorum) have limited ability to spatially segregate along the length of the estuary owing to its small size relative to other estuarine habitats. All four species fed on a variety of prey items including crustaceans, insects and detritus. Despite this parity, the four species were demonstrated to occupy differing dietary niches that were concluded to be responsible for reducing interspecific feeding competition. Seasonal variations in the diets were observed for A. microstoma and Philypnodon grandiceps, with these species also exhibiting contrasting diel feeding behaviours. The closure of the estuary mouth led to the flooding of its margins, resulting in an increase in the size of the estuary and providing alternative food resources for the fish to exploit. It appears the inundation of the flood-zone facilitated further significant divergence in the diets of the fish and is likely to be of high ecological value to the estuary.

The origin of kinship in Oceania : Lewis Henry Morgan and Lorimer Fison

This article investigates the importance of Oceania in the early study of kinship. It examines the tensions between evidence and analysis from the Pacific Islands in the development of Lewis Henry Morgan's theory of evolving kinship forms. While other sources from the Pacific islands are investigated it is focused particularly on the correspondence between Morgan and Lorimer Fison, Methodist missionary and key figure in the spread of kinship schedules and anthropological theories throughout Oceania in the I 870s. The empirical data gathered by Fison, challenged Morgan's schema and questioned the orthodox evolutionist hierarchy in Asia and the Pacific. Also investigated is the British response to this unruly
evidence.

'By the facts we add to our store' : Lorimer Fison, Lewis Henry Morgan and the spread of kinship studies in Australia

The formal study of kinship was introduced to the South Pacific Islands and the Australian colonies by Methodist missionary Lorimer Fison who distributed schedules and collected kinship data from around the region in collaboration with the founder of Anthropology in America, Lewis Henry Morgan. This article is a sequel to H. Gardner, 2008 'The origins of kinship in Oceania', Oceania, 78:2, 137-150. It traces Lorimer Fison's return to the Australian colonies from his mission post in Fiji and the subsequent spread of kinship schedules to settlers, missionaries and administrators around Australia. Based on unpublished correspondence, the article investigates Fison's gradual disillusionment with Morgan's evolutionist hypothesis of the development of the human family and his disdain for the speculation of much metropolitan anthropology in the 1870s.

Improving our superannuation regime : a post-Henry review look at superannuation taxation, raising superannuation balances and longevity insurance

This paper examines what, if any changes should be made regarding certain aspects of the superannuation system. Specifically, it looks at possible changes to the superannuation tax regime, measures intended at increasing superannuation balances, as well as policies aimed at improving the price and availability of retirement income streams. The recommendations of the final report of the Henry Review on these issues are also critically evaluated. The paper finds that a greater targeting of superannuation tax concessions towards middle and lower income earners would make the system more equitable and achieve other desirable goals such as increasing voluntary savings. Furthermore, the available evidence suggests that the current mandatory contributions rate of 9% is adequate, and a higher contributions rate is likely to have more costs than benefits. On the issue of superannuation income streams, the article finds that whilst taxpayers should continue to be allowed to take their superannuation as a lump sum, policies should be implemented to make lifetime annuities more readily available and better value for money. The Henry Review's recommendations on these issues, with some exceptions, are for the most part sound and based on logic.